<template>
  <div class="app-container">

    <!-- 工具条 -->
    <el-card class="operate-container" shadow="never">
      <i class="el-icon-tickets" style="margin-top: 5px"></i>
      <span style="margin-top: 5px">数据列表</span>
      <el-button class="btn-add" size="mini" @click="remove" style="margin-left: 10px;">删除菜单</el-button>
      <el-button class="btn-add" size="mini" @click="syncMenu">同步菜单</el-button>
      <el-button class="btn-add" size="mini" @click="add">添 加</el-button>
    </el-card>

    <el-table
      :data="list"
      style="width: 100%;margin-bottom: 20px;"
      row-key="id"
      border
      default-expand-all
      :tree-props="{children: 'children'}">

      <el-table-column label="名称" prop="name" width="350"></el-table-column>
      <el-table-column label="类型" width="100">
        <template slot-scope="scope">
          {{ scope.row.type == 'view' ? '链接' : scope.row.type == 'click' ? '事件' : '' }}
        </template>
      </el-table-column>
      <el-table-column label="菜单URL" prop="url" ></el-table-column>
      <el-table-column label="菜单KEY" prop="meunKey"  width="130"></el-table-column>
      <el-table-column label="排序号" prop="sort"  width="70"></el-table-column>
      <el-table-column label="操作" width="170" align="center">
        <template slot-scope="scope">
          <el-button v-if="scope.row.parentId > 0" type="text" size="mini" @click="edit(scope.row.id)">修改</el-button>
          <el-button v-if="scope.row.parentId > 0" type="text" size="mini" @click="removeDataById(scope.row.id)">删除</el-button>
        </template>
      </el-table-column>
    </el-table>

    <el-dialog title="添加/修改" :visible.sync="dialogVisible" width="40%" >
      <el-form ref="flashPromotionForm" label-width="150px" size="small" style="padding-right: 40px;">

        <el-form-item label="选择一级菜单">
          <el-select
            v-model="menu.parentId"
            placeholder="请选择">
            <el-option
              v-for="item in list"
              :key="item.id"
              :label="item.name"
              :value="item.id"/>
          </el-select>
        </el-form-item>
        <el-form-item v-if="menu.parentId == 1" label="菜单名称">
          <el-select
            v-model="menu.name"
            placeholder="请选择"
            @change="liveCourseChanged">
            <el-option
              v-for="item in liveCourseList"
              :key="item.id"
              :label="item.courseName"
              :value="item"/>
          </el-select>
        </el-form-item>
        <el-form-item v-if="menu.parentId == 2" label="菜单名称">
          <el-select
            v-model="menu.name"
            placeholder="请选择"
            @change="subjectChanged">
            <el-option
              v-for="item in subjectList"
              :key="item.id"
              :label="item.title"
              :value="item"/>
          </el-select>
        </el-form-item>
        <el-form-item v-if="menu.parentId == 3" label="菜单名称">
          <el-input v-model="menu.name"/>
        </el-form-item>
        <el-form-item label="菜单类型">
          <el-radio-group v-model="menu.type">
            <el-radio label="view">链接</el-radio>
            <el-radio label="click">事件</el-radio>
          </el-radio-group>
        </el-form-item>
        <el-form-item v-if="menu.type == 'view'" label="链接">
          <el-input v-model="menu.url"/>
        </el-form-item>
        <el-form-item v-if="menu.type == 'click'" label="菜单KEY">
          <el-input v-model="menu.meunKey"/>
        </el-form-item>
        <el-form-item label="排序">
          <el-input v-model="menu.sort"/>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="dialogVisible = false" size="small">取 消</el-button>
        <el-button type="primary" @click="saveOrUpdate()" size="small">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>
<script>
  import menuApi from '@/api/wechat/menu'
  //import liveCourseApi from '@/api/live/liveCourse'
  import subjectApi from '@/api/vod/subject'
  const defaultForm = {
    id: null,
    parentId: 1,
    name: '',
    nameId: null,
    sort: 1,
    type: 'view',
    meunKey: '',
    url: ''
  }
  export default {

    // 定义数据
    data() {
      return {
        list: [],

        liveCourseList: [],
        subjectList: [],

        dialogVisible: false,
        menu: defaultForm,
        saveBtnDisabled: false
      }
    },

    // 当页面加载时获取数据
    created() {
      this.fetchData()
      // this.fetchLiveCourse()
      this.fetchSubject()
    },

    methods: {
      // 调用api层获取数据库中的数据
      fetchData() {
        console.log('加载列表')
        menuApi.findMenuInfo().then(response => {
          this.list = response.data
          console.log(this.list)
        })
      },

      // fetchLiveCourse() {
      //   liveCourseApi.findLatelyList().then(response => {
      //     this.liveCourseList = response.data
      //     this.liveCourseList.push({'id': 0, 'courseName': '全部列表'})
      //   })
      // },

      fetchSubject() {
        console.log('加载列表')
        subjectApi.getChildList(0).then(response => {
          this.subjectList = response.data
        })
      },

      syncMenu() {
        this.$confirm('你确定上传菜单吗, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).then(() => {
          return menuApi.syncMenu();
        }).then((response) => {
          this.fetchData()
          this.$message.success(response.message)
        }).catch(error => {
          console.log('error', error)
          // 当取消时会进入catch语句:error = 'cancel'
          // 当后端服务抛出异常时：error = 'error'
          if (error === 'cancel') {
            this.$message.info('取消上传')
          }
        })
      },

      // 根据id删除数据
      removeDataById(id) {
        // debugger
        this.$confirm('此操作将永久删除该记录, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).then(() => { // promise
          // 点击确定，远程调用ajax
          return menuApi.removeById(id)
        }).then((response) => {
          this.fetchData(this.page)
          if (response.code) {
            this.$message({
              type: 'success',
              message: '删除成功!'
            })
          }
        }).catch(() => {
          this.$message({
            type: 'info',
            message: '已取消删除'
          })
        })
      },

      // -------------
      add(){
        this.dialogVisible = true
        this.menu = Object.assign({}, defaultForm)
      },

      edit(id) {
        this.dialogVisible = true
        this.fetchDataById(id)
      },

      fetchDataById(id) {
        menuApi.getById(id).then(response => {
          this.menu = response.data
        })
      },

      saveOrUpdate() {
        this.saveBtnDisabled = true // 防止表单重复提交

        if (!this.menu.id) {
          this.saveData()
        } else {
          this.updateData()
        }
      },

      // 新增
      saveData() {
        menuApi.save(this.menu).then(response => {
          if (response.code) {
            this.$message({
              type: 'success',
              message: response.message
            })
            this.dialogVisible = false;
            this.fetchData(this.page)
          }
        })
      },

      // 根据id更新记录
      updateData() {
        menuApi.updateById(this.menu).then(response => {
          if (response.code) {
            this.$message({
              type: 'success',
              message: response.message
            })
            this.dialogVisible = false;
            this.fetchData(this.page)
          }
        })
      },

      // 根据id查询记录
      fetchDataById(id) {
        menuApi.getById(id).then(response => {
          this.menu = response.data
        })
      },

      subjectChanged(item) {
        console.info(item)
        this.menu.name = item.title
        this.menu.url = '/course/' + item.id
      },

      liveCourseChanged(item) {
        console.info(item)
        this.menu.name = item.courseName
        if(item.id == 0) {
          this.menu.url = '/live'
        } else {
          this.menu.url = '/liveInfo/' + item.id
        }

      }
    }
  }
</script>
